1. Boiled linseed oil is used as a solvent for ___________ resin..
A. Amber.
B. Mastic.
C. Gum.
D. Rosin.
Answer = Amber
2. The __________ varnishes dry slowly, but they form hard and durable surface..
A. Oil.
B. Spirit.
C. Water.
D. Turpentine.
Answer = Oil
3. The word Acoustic is originally derived from a Greek word meaning _________.
A. to write.
B. to speak.
C. to hear.
D. to absorb.
Answer = to hear
4. A _______________ is produced when part of the atmosphere is compressed suddenly..
A. Vacuum.
B. Heat.
C. Smog.
D. Sound.
Answer = Sound
5. A _________________ produced by sound may shatter windows and can cause damage to the Plaster of walls..
A. Wind blow.
B. Sonic boom.
C. Explosion.
D. Lighting.
Answer = Sonic boom
6. The speed at which the sound wave travels or passed through any medium is termed as the ______________.
A. Sound speed.
B. Sound velocity.
C. Sound intensity.
D. Frequency.
Answer = Sound velocity
7. For atmospheric air medium, the sound velocity at 20°C is about ________.
A. 340.0.
B. 1305.0.
C. 338.0.
D. 2600.0.
Answer = 340.0
8. The ________________ is defined as the number of pressure variation which a sounding body makes in each unit of time..
A. Note.
B. Pitch.
C. Wavelength.
D. Intensity.
Answer = Pitch
9. ______________ is a measure of quantity of sound energy..
A. Wavelength.
B. Frequency.
C. Intensity.
D. Loudness.
Answer = Intensity
10. The ________________ is the degree of sensation..
A. Hearing.
B. Frequency.
C. Loudness.
D. Intensity.
Answer = Loudness
11. According to International agreement, the frequency is measured in ________.
A. Meters.
B. Watts.
C. Hertz.
D. Tesla.
Answer = Hertz
12. The speed of sound is taken as __________.
A. 340 m/s.
B. 3.40 m/s.
C. 3400 m/s.
D. 0.34 m/s.
Answer = 340 m/s
13. The range of audible sound too painful noise varies from ________ decibel..
A. 1000000 to 1.
B. 1 to 1000000.
C. 10000 to 10000000.
D. 1 to 130.
Answer = 1 to 1000000
14. ______________ of sound is affected by frequency of sound..
A. Loudness.
B. Intensity.
C. Pitch.
D. Note.
Answer = Intensity
15. The term _________ is used to mean the free passage of clean air in a structure..
A. Circulation.
B. Ventilation.
C. Dissipation.
D. Condensation.
Answer = Ventilation
16. For comfortable working, the ___________ content should be limited to about 0.6% by volume..
A. Oxygen.
B. Hydrogen.
C. Carbon monoxide.
D. Carbon dioxide.
Answer = Carbon dioxide
17. The difference of temperature between the outside air and inside air tends to the deposition of moisture in the room surfaces known as ___________.
A. Ventilation.
B. Diffusion.
C. Condensation.
D. Dissipation.
Answer = Condensation
18. Where people are working, there has to be ______________ to cause proper ventilation of the premises..
A. Air change.
B. Humidity.
C. Temperature.
D. Moisture.
Answer = Air change
19. The rate of amount of water vapour present to the amount it would have contained, had it been saturated, is known as the ___________ the temperature being same..
A. Relative humidity.
B. Saturated air.
C. Dry bulb temperature.
D. Wet bulb temperature.
Answer = Relative humidity
20. For working a temperature of 21 degree Celsius, range of 30% to 70% of ____________ is desirable..
A. Saturated air.
B. Dry bulb temperature.
C. Relative humidity.
D. Wet bulb temperature.
Answer = Relative humidity
21. The ________________ plays an important role in the comfort of persons affected by ventilation system..
A. Carbon monoxide.
B. Purity of air.
C. Volume of room.
D. Health of occupant.
Answer = Purity of air
22. It is quite evident that the incoming air for ventilation should be ________ in summer and ________ in winter before it enters the room..
A. cool, warm.
B. warm, cool.
C. humid, dry.
D. dry, humid.
Answer = cool, warm
23. __________________ is an index which combines the effect of air movement, humidity and temperature..
A. Saturated air.
B. Effective humidity.
C. Dry bulb temperature.
D. Effective temperature.
Answer = Effective temperature
24. The value of ______________ depends on type of activity, geographical conditions, age of occupants, etc..
A. Saturated air.
B. Relative humidity.
C. Effective temperature.
D. Condensation.
Answer = Effective temperature
25. In ______________ system, the use is made of doors, windows, ventilators and skylights to make the room properly ventilated..
A. Artificial ventilation.
B. Air conditioning.
C. Natural ventilation.
D. Mechanical ventilation.
Answer = Natural ventilation
26. In _____________ system, some mechanical arrangement is adopted to provide enough ventilation to the room..
A. Natural ventilation.
B. Skylight.
C. Artificial ventilation.
D. Man made.
Answer = Artificial ventilation
27. Exhaust system, supply system, air conditioning, etc. comes under ________ type of ventilation system..
A. Natural.
B. Mechanical.
C. Man made.
D. Doors.
Answer = Mechanical
28. In ______________ system, the partial vacuum is created inside of the room by exhausting the vitiated inside air by fans or blowers..
A. Supply.
B. Plenum.
C. Air conditioning.
D. Exhaust.
Answer = Exhaust
29. _______________ system is just the reverse of the exhaust system..
A. Air conditioning.
B. Exhaust.
C. Plenum.
D. Supply.
Answer = Supply
30. The defect of ___________ results in confusion with the sound created next..
A. Echoes.
B. Sound foci.
C. Dead spots.
D. Reverberation.
Answer = Reverberation
31. Because of high concentration of reflected sound at the Sound foci, there is deficiency of reflected sound at some point known as __________.
A. Live spots.
B. Dead spots.
C. Sound foci.
D. Reverberation.
Answer = Dead spots
32. The formation of ___________ takes place when the reflecting surfaces are situated at a distance greater than 17 M or so..
A. Live spots.
B. Loudness.
C. Echoes.
D. Noise.
Answer = Echoes
33. In case of concave reflecting interior surfaces, _________ are formed where reflected sound waves meet and create a sound of larger intensity..
A. Sound foci.
B. Dead spots.
C. Exterior noise.
D. Interior noise.
Answer = Sound foci
34. _______________ defect is due to lack of reflecting surfaces near the source of sound and excessive absorption of sound in the hall..
A. Exterior noise.
B. Loudness.
C. Interior noise.
D. Echoes.
Answer = Loudness
35. _______________ defect is due to poor sound insulation..
A. Exterior noise.
B. Interior noise.
C. Loudness.
D. Echoes.
Answer = Exterior noise
36. The term __________ is used to indicate a big room or a hall where sound is picked up by a microphone and it includes the radio broadcasting station, television station, etc..
A. Concert hall.
B. Auditorium.
C. Studio.
D. Recreational hall.
Answer = Studio
37. ____________ is a very important consideration in the acoustic design of an Auditorium and it involves geometrical aspects of the hall..
A. Site selection.
B. Seating arrangement.
C. Shape.
D. Sound absorption.
Answer = Shape
38. The adequate absorbing surfaces should be provided in the hall to control the ____________.
A. Loudness.
B. Noise.
C. Reverberation.
D. Dead spots.
Answer = Reverberation
39. ______________ is very important to control the noise pollution near an Auditorium area..
A. Seating arrangement.
B. Site selection.
C. Balcony.
D. Volume.
Answer = Site selection
40. Combination system consist of supply system and __________ system..
A. Plenum.
B. Air conditioning.
C. Exhaust.
D. Natural.
Answer = Exhaust
41. In _______________ process, the fresh air is forced in the room and the vitiated air is allowed to leave the room by itself or is extracted by outlet fans..
A. Plenum.
B. Air conditioning.
C. Exhaust.
D. Supply.
Answer = Plenum
42. The term __________ is used to indicate the science of controlling air with respect to humidity, temperature, movement of air, bacteria content, etc..
A. Air conditioning.
B. Circulation.
C. Condensation.
D. Conditioning.
Answer = Air conditioning
43. ________________ are made of mats or screens of split wire or glass wool or such other material and coated with non drying viscous oil..
A. Dry filters.
B. Water sprays.
C. Electric precipitator.
D. Viscous filters.
Answer = Viscous filters
44. __________________ are used to collect the valuable chemical or mineral dusts..
A. Dry filters.
B. Viscous filters.
C. Water filters.
D. Electric precipitator.
Answer = Electric precipitator
45. In winter, it becomes necessary to supplied slightly _________ air to the inside of the building.
A. Cool.
B. Heated.
C. Humid.
D. Dehumidified.
Answer = Heated
46. In summer, it is necessary to supply ___________ air inside the room before it enters the room..
A. Dehumidified.
B. Humid.
C. Cool.
D. Heated.
Answer = Cool
47. _____________ is the process by which the required amount of moisture is added in the air..
A. Dehumidification.
B. Humidification.
C. Absorption.
D. Condensation.
Answer = Humidification
48. ________________ is the process by which the required amount of moisture is taken out from the air..
A. Condensation.
B. Dehumidification.
C. Humidification.
D. Absorption.
Answer = Dehumidification
49. The _________ are the substances which allow moisture to stay on their surfaces..
A. Refrigerant.
B. Coolant.
C. Adsorbent.
D. Absorbent.
Answer = Adsorbent
50. In Summer, the outside air is hot and hence the process of air conditioning involves filtering, dehumidification and _________.
A. Reheating.
B. Pre heating.
C. Humidification.
D. Adsorption.
Answer = Reheating
51. In Winter, the outside air is cool and hence, the process of air conditioning involves filtering, preheating and _____________.
A. Dehumidification.
B. Humidification.
C. Condensation.
D. Circulation.
Answer = Humidification
52. ________________ are made of sheet metal of suitable size and shape to convey the conditioned air..
A. Outlets.
B. Pumps.
C. Grills.
D. Ducts.
Answer = Ducts
53. The location of _________ depends on various factors such as structural features, composition of openings, height of room, etc..
A. Inlets.
B. Outlets.
C. Pumps.
D. Ducts.
Answer = Outlets
54. The ____________ of suitable type may be used to distribute air inside the room..
A. Grills.
B. Pumps.
C. Ducts.
D. Ceilings.
Answer = Pumps
55. _________________ type of equipment have intermittent cycles of work..
A. Intermittent.
B. Continuous flow.
C. Mixed.
D. Combination.
Answer = Intermittent
56. __________________ types of equipment have a continuous flow of work turned out..
A. Mixed.
B. Combined.
C. Continuous flow.
D. Intermittent.
Answer = Continuous flow
57. _________________ types of equipments are characteristics of both, intermittent as well as continuous flow type equipments..
A. Combined.
B. Mixed.
C. Flow.
D. Advanced.
Answer = Mixed
58. The term ____________ is used to indicate the process of allocating a prepaid expense to accounting periods during which there are benefits realised from the depreciable equipment..
A. Cost Depreciation.
B. Investment charges.
C. Maintenance and repairs.
D. Operation cost.
Answer = Cost Depreciation
59. In _____________ method, it is assumed that a property loses its value by the same amount every year..
A. Sinking fund.
B. Operating Cost.
C. Constant percentage.
D. Straight line.
Answer = Straight line
60. In _____________ method, it is assumed that a property will lose its value by a constant percentage of its value and the beginning of every year..
A. Sinking fund.
B. Constant percentage.
C. Straight line.
D. Operating Cost.
Answer = Constant percentage
61. In _____________ method, the depreciation of properties assumed to be equal to the annual sinking fund plus the interest on the fund for that year..
A. Sinking fund.
B. Annual fund.
C. Constant percentage.
D. Straight line.
Answer = Sinking fund
62. In ______________, the owner has to invest a certain amount for the purchase of an equipment..
A. Cost depreciation.
B. Investment charges.
C. Operation cost.
D. Management.
Answer = Investment charges
63. The annual cost of _______________ may be determined independently or it may be linked up with the depreciated cost of the equipment by a certain fix percentage..
A. Maintenance and repairs.
B. Depreciation cost.
C. Installation.
D. Operation cost.
Answer = Maintenance and repairs
64. The ____________________ of an equipment mainly includes the amount spent for fuel and lubricating oil..
A. Maintenance and repairs.
B. Refurbishment.
C. Operation cost.
D. Installation cost.
Answer = Operation cost
65. The term _____________ is used to indicate the period during which the equipment is in ideal condition..
A. Depreciation.
B. Downtime.
C. Inadequacy.
D. Normal deterioration.
Answer = Downtime
66. __________________ indicates the time duration by which we comes to know about the destructive period of an equipment..
A. Depreciation.
B. Inadequacy.
C. Obsolescence.
D. Normal deterioration.
Answer = Normal deterioration
67. Due to _______________ the equipment seems physically sound but it becomes old fashioned and the rate of its output become less..
A. Depreciation.
B. Downtime.
C. Obsolescence.
D. Deterioration.
Answer = Obsolescence
68. The replacement of the equipment also depend on the _________.
A. Sorority.
B. Downtime.
C. Inadequacy.
D. Working Method.
Answer = Working Method
69. A ___________________ is also known as roto-hammer drill or masonry drill..
A. Rotary percussion drill.
B. Steam hammer.
C. Stop hammer.
D. Tripod drill.
Answer = Rotary percussion drill
70. A ______________ is a power driven hammer used to shape forgings..
A. Tripod drill.
B. Wagon drill.
C. Stop hammer.
D. Steam hammer.
Answer = Steam hammer
71. _________________ is the modified form of Jack hammer..
A. Tripod drill.
B. Wagon drill.
C. Piston hammer.
D. Stop hammer.
Answer = Stop hammer
72. ________________ is a Jack hammer mounted on a tripod with legs spread out to grant sufficient stability to the drill..
A. Wagon drill.
B. Tripod drill.
C. Steam hammer.
D. Jack hammer.
Answer = Tripod drill
73. ________________ are drifters which are mounted on masts and masts are mounted on two wheels to provide easy portability of the drills..
A. Wagon drills.
B. Tripod drills.
C. Rotary percussion drills.
D. Rotary hammer drills.
Answer = Wagon drills
74. The _____________ is gripped by a chuck at one end of the drill and is pressed against the target material and rotated..
A. Drilling Coolant.
B. Drilling hammer.
C. Drilling bit.
D. Drilling pattern.
Answer = Drilling bit
75. In _____________, the bits for Jack hammer and drifters are forged on one end of the drill Steel..
A. Detachable bits.
B. Forged bits.
C. Rotary bits.
D. Revolving bits.
Answer = Forged bits
76. ________________ are Steel bits which are screwed to the ends of drill rods and they can be attached to or removed from the drill steel..
A. Detachable bits.
B. Forged bits.
C. Removable bits.
D. Sharpened bits.
Answer = Detachable bits
77. ______________ are the most common drilling tools used by the handyman with either hand or electric drill..
A. Screwdriver bits.
B. Tile bits.
C. Masonry bits.
D. Twist bits.
Answer = Twist bits
78. Twist bits are also available coated with ______________.
A. Calcium chloride.
B. Aluminium Nitrate.
C. Titanium Nitrate.
D. Titanium Nitride.
Answer = Titanium Nitride
79. _________________ are designed to fit in rechargeable screwdriver and have low power..
A. Tile bits.
B. Screwdriver bits.
C. Wood auger bits.
D. Masonry bits.
Answer = Screwdriver bits
80. _______________ are designed for drilling into brick, block, stone or concrete..
A. Wood auger bits.
B. Masonry bits.
C. Bullet pilot bits.
D. Spur point bits.
Answer = Masonry bits
81. _________________ are also known as a wood or dowel bit..
A. Countersink bits.
B. Flat wood bits.
C. Hole saw bits.
D. Spur point bits.
Answer = Spur point bits
82. ____________________ are same as Spur point bits, but can be used in metal, wood and plastics..
A. Tile bits.
B. Wood auger bits.
C. Countersink bits.
D. Bullet pilot point bits.
Answer = Bullet pilot point bits
83. __________________ is used in a power or hand drill to form the conical recess for the heads of countersunk screws..
A. Countersink bit.
B. Carbide insert bit.
C. Hole saw bit.
D. Flat wood bit.
Answer = Countersink bit
84. ______________ are used to excavate underwater material..
A. Scraper.
B. Dredger.
C. Excavator.
D. Escalator.
Answer = Dredger
85. A _______________ Dredger consists of an endless chain of bucket mounted on a ladder..
A. Bucket ladder.
B. Dipper.
C. Grab.
D. Hydraulic.
Answer = Bucket ladder
86. A _______________ Dredger consists of a pontoon carrying a frame in which a revolving boom is fixed..
A. Grab.
B. Hydraulic.
C. Bucket ladder.
D. Dipper.
Answer = Dipper
87. A _____________ dredger essentially consist of a graph suspended from cable..
A. Hydraulic.
B. Grab.
C. Ladder.
D. Bucket.
Answer = Grab
88. A _______________ Dredger essentially consist of sand pump which excavates and transport the bed material in one operation..
A. Hydraulic.
B. Skimmer.
C. Bucket ladder.
D. Grab.
Answer = Hydraulic
89. ________________ is mounted on the wheels and carries two to four teeth, the usual number being three..
A. Rooter.
B. Ripper.
C. Ditcher.
D. Trencher.
Answer = Rooter
90. ________________ is used to excavate the trenches of width from 250 mm to 450 mm and depth 4 m with accuracy and speed..
A. Ripper.
B. Rooter.
C. Scarifier.
D. Ditcher.
Answer = Ditcher
91. ____________ type Trencher can dig a trench up to 10 m in depth and 4 m in width..
A. Bucket.
B. Wheel.
C. Ladder.
D. Series.
Answer = Ladder
92. In a Trencher, a series of small cutting ____________ attached to two endless chains which are supported by a boom..
A. Buckets.
B. Teeth.
C. Grader.
D. Cutter.
Answer = Buckets
93. ___________________ equipment are used to decrease the porosity of earth and to increase the density and strength of the earth..
A. Excavation.
B. Compaction.
C. Hauling.
D. Hoisting.
Answer = Compaction
94. _________________ type of rollers rely upon their deadweight to carry out consolidation work..
A. Rubber tyre.
B. Pneumatic.
C. Dead weight.
D. Sheep’s foot.
Answer = Dead weight
95. The weight of _____________ Roller varies from 500 kg to 5 tonnes..
A. Dead weight.
B. Vibrating.
C. Ramming.
D. Tamping.
Answer = Vibrating
96. A _________________ roller consists of a flat platform below with number of smooth rubber tyre wheels are mounted on two or more axles..
A. Sheep’s foot.
B. Pneumatic.
C. Smooth wheeled.
D. Dead weight.
Answer = Pneumatic
97. ______________ rollers are also known as tamping rollers..
A. Sheep’s foot.
B. Rubber tyred.
C. Smooth wheeled.
D. Pneumatic.
Answer = Sheep’s foot
98. The ________________ rollers are considered most suitable for compacting clayey soil or soil containing mixture of sand and clay..
A. Smooth wheeled.
B. Sheep’s foot.
C. Dead weight.
D. Pneumatic.
Answer = Sheep’s foot
99. _______________ is a self propelled machine which is used mainly to exert a powerful tractive force for pulling other machines..
A. Tractor.
B. Bulldozer.
C. Angle dozer.
D. Scraper.
Answer = Tractor
100. A _________ is a very useful equipment and it can be used for construction work like to clear the site of work, to make the land level, etc..
A. Scraper.
B. Grader.
C. Excavator.
D. Bulldozer.
Answer = Bulldozer
101. The size of the bulldozer is indicated by the dimension of its _________.
A. Site.
B. Tyre.
C. Engine.
D. Blades.
Answer = Blades
102. A ________________ can be used on wet ground and in all conditions of weather..
A. Grader.
B. Scraper.
C. Escalator.
D. Bulldozer.
Answer = Bulldozer
103. A ____________ is used to level the ground and spreads the loose material..
A. Excavator.
B. Scraper.
C. Grader.
D. Tractor.
Answer = Grader
104. A Grader which is told by a tractor is known as _________.
A. Tractor grader.
B. Motor grader.
C. Scraper.
D. Elevating grader.
Answer = Elevating grader
105. _______________ consists of a large bucket which is attached to a tractor..
A. Bulldozer.
B. Scraper.
C. Grader.
D. Escalator.
Answer = Scraper
106. ________________ are usually mounted on two or four pneumatic tyred wheels..
A. Scraper.
B. Backactor.
C. Elevator.
D. Escalator.
Answer = Scraper
107. __________________ type of scraper consists of a four wheeled scrapper bowl towed behind crawler Power unit..
A. Three axle.
B. Two axle.
C. Crawler drawn.
D. Four axle.
Answer = Crawler drawn
108. An _______________ is an oldest type of machine which removes earth..
A. Escalator.
B. Excavator.
C. Elevator.
D. Bulldozer.
Answer = Excavator
109. _________________ type of excavator used for digging the foundation trenches below operating level..
A. Clamshell.
B. Backactor.
C. Power shovel.
D. Skimmer.
Answer = Backactor
110. _________________ type of excavator is used for digging below, at or above operating level in a vertical range..
A. Skimmer.
B. Dragline.
C. Clamshell.
D. Back trench.
Answer = Clamshell
111. ________________ type of excavator carries Shovel at its lower end..
A. Power shovel.
B. Dragline.
C. Clamshell.
D. Backactor.
Answer = Power shovel
112. __________________ type of excavator is used for digging at or below the operating level..
A. Skimmer.
B. Dragline.
C. Power shovel.
D. Dredger.
Answer = Dragline
113. ________________ type of excavator carries the skimmer at its lower end..
A. Skimmer.
B. Dredger.
C. Escalator.
D. Elevator.
Answer = Skimmer
114. _________________ drilling has rapidly become an inexpensive alternative to outdated mechanical hole drilling methods..
A. Laser.
B. Ultrasonic.
C. Radiation.
D. Atomic.
Answer = Laser
115. __________________ laser drilling uses a rapid fire burst of pulses micro-machining method..
A. Conventional.
B. Trepanning.
C. Percussion.
D. Hydrostatic.
Answer = Percussion
116. ____________________ laser drilling is a method used to remove a cylindrical Core, or circular disc from a substrate..
A. Trepanning.
B. Percussion.
C. Pulsating.
D. Carbonic.
Answer = Trepanning
117. ______________________ is used to heat bitumen before it is applied on the road surface..
A. Dozer.
B. Concrete mixer.
C. Grader.
D. Bitumen boiler.
Answer = Bitumen boiler
118. ______________ is mainly used for grading purpose..
A. Grader.
B. Dozer.
C. Scarifier.
D. Scraper.
Answer = Dozer
119. __________________ is used for designing the old road to a predetermined depth..
A. Grader.
B. Scarifier.
C. Road roller.
D. Scraper.
Answer = Scarifier
120. ________________ is used for rolling and compacting the subgrade, the base and the surface of many types of roads..
A. Tractor.
B. Scraper.
C. Road roller.
D. Concrete mixer.
Answer = Road roller
121. __________________ is used for carrying out the earth work operation of a road..
A. Roller.
B. Tractor.
C. Scraper.
D. Dumper.
Answer = Scraper
122. _____________________ are the bits used for drilling ceramic tiles and glass with a ground tungsten carbide tip..
A. Flat wood bits.
B. Countersink bits.
C. Tile bits.
D. Carbide insert bits.
Answer = Tile bits
123. _________________ are intended for power drilling use only, the centre point locates the bit and the flat steel on either side cuts away the timber..
A. Wood auger bits.
B. Timber bits.
C. Carbide insert bits.
D. Flat wood bits.
Answer = Flat wood bits
124. ______________________ are used for cutting large, fixed diameter holes in a wood or plastic..
A. Carbide insert bits.
B. Wood auger bits.
C. Hole saw bits.
D. Wooden bits.
Answer = Hole saw bits
125. ____________________ are ideal for drilling large diameter and deep holes in wood or thick man-made boards..
A. Wood auger bits.
B. Masonry bits.
C. Spur point bits.
D. Countersink bits.
Answer = Wood auger bits
126. _____________________ bits are used when some rocks are so abrasive that steel bits have to be replaced after they have been drilled only few centimetres of hole..
A. Carbide insert bits.
B. Tile bits.
C. Bullet pilot point bits.
D. Spur point bits.
Answer = Carbide insert bits
127. A __________________ roller is a multi purpose roller which is used for various purposes and for practically all type of roads..
A. Smooth wheeled.
B. Pneumatic.
C. Rubber tyred.
D. Dead weight.
Answer = Smooth wheeled
128. Effective compaction is not achieved by ____________ rollers..
A. Rubber tyred.
B. Sheep’s foot.
C. Pneumatic.
D. Smooth wheeled.
Answer = Smooth wheeled
129. ________________ consist of a vibrating unit mounted on a screed, plate or roller..
A. Earth rammers.
B. Pounding.
C. Vibrating rollers.
D. Vibratory compactors.
Answer = Vibratory compactors
130. The ________________ compact soil close to the earth surface only..
A. Earth rammers.
B. Vibrating rollers.
C. Ditcher.
D. Skimmer.
Answer = Earth rammers
131. _______________ are the most commonly used equipment for transportation..
A. Dump trucks.
B. Rollers.
C. Trucks.
D. Bulldozers.
Answer = Trucks
132. _________________ is a self propelled machine which is used mainly to exert a powerful tractive force for pulling other machines..
A. Bulldozer.
B. Crane.
C. Dumper.
D. Tractor.
Answer = Tractor
133. The trucks with automatic unloading device are called ________________.
A. Dumpers.
B. Trailers.
C. Conveyer.
D. Dump trucks.
Answer = Dump trucks
134. __________________ are very useful for horizontal transportation of materials like bricks, aggregates, scaffoldings, etc..
A. Elevators.
B. Escalators.
C. Dumpers.
D. Conveyors.
Answer = Dumpers
135. _________________ are extra wagons attached to the tractors or trucks..
A. Elevators.
B. Conveyors.
C. Trailers.
D. Dumper.
Answer = Trailers
136. ___________________ are used for vertical transportation of aggregates and wet concrete on large project sites..
A. Elevators.
B. Trucks.
C. Conveyors.
D. Escalators.
Answer = Elevators
137. In order to raise and shift heavy loads from one place to another, the _________ are employed in the construction of big works..
A. Elevators.
B. Conveyors.
C. Cranes.
D. Trucks.
Answer = Cranes
138. ________________ crane is used for open sites and it possesses a very long reach..
A. Goliath.
B. Derrick.
C. Swing jib.
D. Cable.
Answer = Derrick
139. In _________________ type of crane, heavy temporary staging or platform is prepared for the working of the crane..
A. Cableways.
B. Swing jib.
C. Goliath.
D. Platform.
Answer = Goliath
140. ________________ are cranes of Swing jib type and are mounted on high Steel Towers..
A. Cableways.
B. Swing jib.
C. Tower.
D. Goliath.
Answer = Tower
141. A ________________ consists of a coil whose diameter is about 50 mm to 100 mm..
A. Cableway.
B. Tower crane.
C. Roller.
D. Hoists.
Answer = Tower crane
142. __________________ is the process of using a drill bit in a drill to produce cylindrical holes in solid materials, such as wood or metal..
A. Pumping.
B. Hauling.
C. Drilling.
D. Excavating.
Answer = Drilling
143. The term _____________ is used to indicate the spacing of the drill holes..
A. Drilling bit.
B. Drilling pattern.
C. Abrasion drill.
D. Percussion drilling.
Answer = Drilling pattern
144. In ________________ drilling pattern, the drill holes are arranged nearly parallel in horizontal plane with a slight inclination..
A. Pyramidal cut.
B. Straight line cut.
C. Centre cut.
D. Parallel cut.
Answer = Centre cut
145. In ______________ drilling pattern, the drill holes slope both in the horizontal and vertical planes..
A. Centre cut.
B. Parallel cut.
C. Pyramidal cut.
D. Straight line cut.
Answer = Pyramidal cut
146. In ______________ type of drill, the grinding of rock into small particles is carried out through the Abrasive effect of a bit which rotates in the hole..
A. Percussion.
B. Abrasion.
C. Pyramidal.
D. Centre cut.
Answer = Abrasion
147. _________________ is a rotary drill and it consists of steel pipe stem on the bottom of which is attached to a roller bit.
A. Blasthole.
B. Diamond.
C. Shot.
D. Percussion.
Answer = Blasthole
148. _________________ is a self-propelled drill..
A. Percussion drilling.
B. Shot drill.
C. Blasthole drill.
D. Diamond drill.
Answer = Blasthole drill
149. _______________ is a rotary type of drill and its bit consists of a metal mould or Matrix containing a large number of diamonds..
A. Percussion drilling.
B. Shot drill.
C. Diamond drill.
D. Churn drill.
Answer = Diamond drill
150. _________________ bits are specially used for very hard materials..
A. Churn drill.
B. diamond drill.
C. Steam hammer.
D. Stop hammer.
Answer = diamond drill
151. ________________ based lubricants do not work well on diamond drill bits..
A. Water.
B. Oil.
C. Grease.
D. Gum.
Answer = Oil
152. _______________ is a Rotary type drill and its abrasive power depends on the bit which is in the form of a section of steel pipe with serrated or a roughened lower end..
A. Shot drill.
B. Churn drill.
C. Piston drill.
D. Tripod drill.
Answer = Shot drill
153. ________________ type of drill consists of a long Steel bit which is mechanically lifted up and dropped down to disintegrate the rock..
A. Stop hammer.
B. Drop hammer.
C. Steam hammer.
D. Churn drill.
Answer = Churn drill
154. ____________________ is a air operated drill similar to Jack hammer..
A. Jack hammer.
B. Drifter.
C. Piston drill.
D. Stop hammer.
Answer = Drifter
155. _______________ is a heavy duty rock drills used for drifting and tunnelling and for benching and production drills..
A. Drifter.
B. Jack hammer.
C. Rotary Hammer.
D. Tripod drill.
Answer = Drifter
156. ________________ is an air operated drill which can easily be carried from one place to the other..
A. Jack hammer.
B. Piston drill.
C. Stop hammer.
D. Tripod drill.
Answer = Jack hammer
157. In ___________________ type of gantries, derricks are built on specially constructed tower at site of work..
A. Gin poles.
B. Platform.
C. Derrick tower.
D. Travelling.
Answer = Derrick tower
158. _________________ Gantry consists of a platform which receives and distributes the material..
A. Platform.
B. Traveling.
C. Gin pole.
D. Derrick tower.
Answer = Platform
159. ____________________ is similar to platform gantry except that the platform is converted into a movable carriage..
A. Gin poles.
B. Platform Gantry.
C. Traveling gantry.
D. Derrick tower Gantry.
Answer = Traveling gantry
160. A _______________ is merely a steel or Timber mast which is held in the vertical position by three to four guy ropes..
A. Pulley block.
B. Hoists.
C. Gin poles.
D. Gantry.
Answer = Gin poles
161. A ______________ consist of horizontal platform which is moved upward and downward by a powered winch between vertical guides..
A. Pulley block.
B. Hoists.
C. Elevator.
D. Conveyor.
Answer = Hoists
162. _______________ are used to change the direction of ropes and to raise greater loads with less efforts..
A. Pulley blocks.
B. Elevators.
C. Escalators.
D. Conveyors.
Answer = Pulley blocks
163. A _________________ is a mechanism in the shape of a cylinder or drum, over which rope or chain is wound..
A. Conveyor.
B. Pulley.
C. Winch.
D. Rotor.
Answer = Winch
164. With the help of ________________, the materials are transported with a continuous flow at comparatively high speeds..
A. Trucks.
B. Dumpers.
C. Conveyors.
D. Elevators.
Answer = Conveyors
165. ________________ are the supports of the continuous belt..
A. Idlers.
B. Pulleys.
C. Cylinders.
D. Driving units.
Answer = Pulleys
166. _________________ are also known as the self-contained conveyors and they are used when placing of small volume of concrete is involved..
A. Spreading Conveyors.
B. Feeder Conveyors.
C. Portable Conveyors.
D. Supply Conveyors.
Answer = Portable Conveyors
167. ____________________ conveyors operate in series with end discharge transfer points..
A. Transfer.
B. Feeder.
C. Spreading.
D. Unit.
Answer = Feeder
168. ________________ conveyors maybe in the form of side discharge conveyors..
A. Feeder.
B. Spreading.
C. Radial.
D. Discharge.
Answer = Spreading
169. The conception of providing Arial _________ developed from the need to provide an economical alternative to road and Railways for transporting materials..
A. Ropeways.
B. Waterways.
C. Railways.
D. Roadway.
Answer = Ropeways
170. ______________ ropes are widely used for hoisting purpose and they consist of fibre suitably bound together..
A. Manilla.
B. Wire.
C. Aluminium.
D. Tungsten.
Answer = Manilla
171. __________________ ropes consists of strands of wire of iron, Steel, etc. which are twisted around the core of hemp..
A. Manilla.
B. Wire.
C. Twisted.
D. Corrugated.
Answer = Wire
172. Ultimate strength to cement is provided by.
A. Tricalcium silicate.
B. Di-calcium silicate.
C. Tri-calcium aluminate.
D. Tetra calcium alumino ferrite..
Answer = Di-calcium silicate
173. Elastomers can extend upto.
A. five times their original dimensions.
B. seven times their original dimensions.
C. ten times their original dimensions.
D. three times their original dimensions..
Answer = ten times their original dimensions
174. Bitumen felt.
A. is used as water proofing material.
B. is used as damp proofing material.
C. is made from bitumen and hessian fibres.
D. all the above..
Answer = all the above.
175. In the method of condensation polymerization,.
A. low-molecular substances are removed from the high molecular substance.
B. the reaction proceeds with an evolution of ammonia.
C. the reaction proceeds with an evolution of hydrogen chloride.
D. all the above..
Answer = all the above.
176. In the cement the compound quickest to react with water, is.
A. Tricalcium aluminate.
B. Tetra-calcium alumino-ferrite.
C. Tricalcium silicate.
D. Dicalcium silicate..
Answer = Tricalcium aluminate
177. The initial setting time of lime-pozzolana, is.
A. 30 minutes.
B. 60 minutes.
C. 90 minutes.
D. 120 minutes..
Answer = 120 minutes.
178. The clay to be used for manufacturing bricks for a large project, is dugout and allowed to weather throughout.
A. the monsoon.
B. the winter.
C. the summer.
D. none of these..
Answer = the monsoon
179. The rocks which are formed due to cooling of magma at a considerable depth from earth's surface are called.
A. Plutonic rocks.
B. Hypabyssal rocks.
C. Volcanic rocks.
D. Igneous rocks..
Answer = Plutonic rocks
180. Quartzite is a.
A. metamorphic rock.
B. argillaceous rock.
C. calcareous rock.
D. silicious rock..
Answer = silicious rock.
181. The variety of pig iron used for manufacture of wrought iron, is.
A. Bessemer pig.
B. Grey or foundry pig.
C. White forge pig.
D. Mottled pig..
Answer = White forge pig
182. Sand stone is.
A. sedimentary rock.
B. metamorphic rock.
C. igneous rock.
D. volcanic rock..
Answer = sedimentary rock
183. If the furnace is provided with insufficient fuel at low temperatures, the type of pig iron produced, is called.
A. Bessemer pig.
B. Grey or foundry pig.
C. White or forge pig.
D. Mottled pig..
Answer = White or forge pig
184. Stainless steel contains.
A. 18% of chromuim and 8% nickel.
B. 8% of chromium and 18% of nickel.
C. 12% of chromium and 36% of nickel.
D. 36% of chromium and 12% of nickel..
Answer = 18% of chromuim and 8% nickel
185. Pick up the hypabyssal rock from the following:.
A. Granite.
B. Dolerite.
C. Basalt.
D. All the above..
Answer = Dolerite
186. Depending on the chemical composition and mechanical properties, iron may be classified as.
A. cast iron.
B. wrought iron.
C. steel.
D. all the above..
Answer = all the above.
187. Wrought iron contains carbon about.
A. 1.5% to 5.5%.
B. 0.5% to 1.75%.
C. 0.1% to 0.25%.
D. none to these..
Answer = 0.1% to 0.25%
188. The main constituent of fly-ash, is.
A. aluminium oxide.
B. silica.
C. ferrous oxide.
D. All of these..
Answer = All of these.
189. Bitumen in.
A. solid state, is called asphalt.
B. semi fluid state, is called mineral tar.
C. fluid state, is called petroleum.
D. all the above..
Answer = all the above.
190. The plastics made from cellulose resin.
A. are as clear as glass.
B. are tough and strong.
C. possess excellent electrical properties.
D. All the above..
Answer = All the above.
191. Kaolin is chemically classified as.
A. metamorphic rock.
B. argillaceous rock.
C. calcareous rock.
D. silicious rock..
Answer = argillaceous rock
192. Which one of the following is acid resistant asbestos:.
A. actinolite asbestos.
B. amosite asbestos.
C. anthophylite asbestos.
D. All the above..
Answer = All the above.
193. Due to attack of dry rot, the timber.
A. cracks.
B. shrinks.
C. reduces to powder.
D. none of these..
Answer = reduces to powder
194. Brittleness of cold is due to an excess of.
A. sulphur.
B. carbon.
C. phosphorus.
D. silicon..
Answer = phosphorus
195. For the manufacture of Portland cement, the proportions of raw materials used, are.
A. lime 63% ; silica 22% ; other ingredients 15%.
B. lime 22% ; silica 63% ; other ingredients 15%.
C. silica 40% ; lime 40% ; other ingredients 20%.
D. silica 70% ; lime 20% ; other ingredients 10%..
Answer = lime 63% ; silica 22% ; other ingredients 15%
196. Asbestos cement.
A. is brittle.
B. warps due to changes in humidity.
C. strength is lowered when saturated by water.
D. all the above..
Answer = all the above.
197. Gniess is obtained from.
A. igneous rocks.
B. metamorphic rocks.
C. sedimentary rocks.
D. sedimentary metamorphic rocks..
Answer = sedimentary metamorphic rocks.
198. The rocks formed by gradual deposition, are called.
A. sedimentary rocks.
B. igneous rocks.
C. metamorphic rocks.
D. none of these..
Answer = sedimentary rocks
199. Galvanising means covering iron with a thin coat of.
A. tin.
B. zinc.
C. glaze.
D. coal tar..
Answer = zinc
200. For preparing porcelains, the clay should be.
A. sufficiently pure.
B. of high degree of tanacity.
C. of good plasticity.
D. All the above..
Answer = All the above.
201. Polymerization helps to improve the property of.
A. strength.
B. rigidity.
C. elasticity.
D. all of these..
Answer = all of these.
202. Good quality stones must.
A. be durable.
B. be free from clay.
C. resist action of acids.
D. all the above..
Answer = all the above.
203. Sewer pipes are made of.
A. earthen ware.
B. stone ware.
C. refractory clay.
D. all the above..
Answer = stone ware
204. Fibre glass.
A. retains heat-longer.
B. has a higher strength to weight ratio.
C. is shock proof and fire retardent.
D. all the above..
Answer = all the above.
205. Pick up the correct statement from the following:.
A. The theory of formation of concrete is based on the phenomena of formation of voids.
B. The bulking of sand is taken into account while volumetric proportioning of the aggregates.
C. The dry sand and the sand completely flooded with water, have practically the same volume.
D. All the above..
Answer = All the above.
206. Pick up the correct statement from the following:.
A. In stone arches, the stones are placed with their natural beds radial.
B. In cornices, the stones are placed with their natural beds as vertical.
C. In stone walls, the stones are placed with their natural beds as horizontal.
D. All the above..
Answer = All the above.
207. The commonly used colour pigment in paints, is.
A. ambers.
B. carbon black.
C. iron oxide.
D. all the above..
Answer = all the above.
208. Varnish is a transparent or semi-transparent solution of resinuous substances in.
A. alcohol.
B. linseed.
C. turpentine.
D. all the above..
Answer = all the above.
209. Initial setting time of cement for asbestos cement products should be not less than.
A. 30 minutes.
B. 50 minutes.
C. 75 minutes.
D. 90 minutes..
Answer = 90 minutes.
210. The variety of pig iron used for the manufacture of steel by Bessemer process, is.
A. Bessemer pig.
B. Grey pig.
C. White forge pig.
D. Mottled pig..
Answer = Bessemer pig
211. For melting one tonne of cast iron.
A. 700 m3 air is required.
B. 20 kg limestone is required.
C. one quintal coke is required.
D. all the above..
Answer = all the above.
212. For filling cracks in masonry structures, the type of bitumen used, is.
A. cut-back bitumen.
B. bitumen-emulsion.
C. blown bitumen.
D. plastic bitumen..
Answer = plastic bitumen.
213. Plastic.
A. is an organic substance.
B. consists of natural or synthetic binders.
C. finished products are rigid and stable at normal temperature.
D. All the above..
Answer = All the above.
214. Vanadium steel is generally used for.
A. railway switches and crossing.
B. bearing balls.
C. magnets.
D. axles and springs..
Answer = axles and springs.
215. Pick up the correct statement from the following:.
A. In basic Bessemer process, the steel heats the converter.
B. In open-hearth process, the furnace heats the steel.
C. In Siemens process, the impurities of pig iron are oxidised by the oxygen of the ore.
D. all the above..
Answer = all the above.
216. The process of manufacturing steel by heating short lengths of wrought iron bars mixed with charcoal in fire clay crucibles and collecting the molten iron into moulds, is known as.
A. Cementation process.
B. Crucible process.
C. Bessemer process.
D. Open hearth process..
Answer = Crucible process
217. The filler used in plastic bitumen, is.
A. shale powder.
B. talc powder.
C. asbestos powder.
D. none of these..
Answer = asbestos powder
218. Resins are.
A. not soluble in water.
B. soluble in spirit.
C. used in varnishes.
D. all the above..
Answer = used in varnishes
219. Refractory bricks are used for.
A. retaining walls.
B. columns.
C. piers.
D. combustion chambers..
Answer = combustion chambers.
220. Expanded metal is.
A. manufactured from steel sheets.
B. used for reinforced concrete in road pavements.
C. measured in term of SWM (shortway mesh) and LWM (long way mesh).
D. all the above..
Answer = all the above.
221. The rock generally used for roofing, is.
A. granite.
B. basalt.
C. slate.
D. pumice..
Answer = slate
222. Apiece of sawn timber whose cross-sectional dimensions exceed 5 cm, in one direction and 20 cm in the other direction, is called a.
A. cant.
B. deal.
C. baulk.
D. strip..
Answer = baulk
223. Quick lime (or caustic lime).
A. is obtained by the calcination of pure lime stone.
B. has great affinity to moisture.
C. is amorphous.
D. All the above..
Answer = All the above.
224. Pick up the correct statement from the following:.
A. soft stones are required for carving.
B. light stones are required for arches.
C. hard stones are required to stand high pressure.
D. All the above..
Answer = All the above.
225. Name the type of cement from the following for canal linings :.
A. sulphate resisting cement.
B. rapid hardening cement.
C. quick setting cement.
D. pozzuolana cement..
Answer = sulphate resisting cement
226. Mastic asphalt is generally used for.
A. damp proof course.
B. water proof layer.
C. partition walls.
D. both (a) and (b)..
Answer = both (a) and (b).
227. Black marble is generally found in the district of.
A. Jodhpur.
B. Jaipur.
C. Jabalpur.
D. Pune..
Answer = Jaipur
228. The most fire resistant paints are :.
A. enamel paints.
B. aluminium paints.
C. asbestos paints.
D. cement paints..
Answer = asbestos paints
229. If P is the percentage of water required for normal consistency, water to be added for determination of initial setting time, is.
A. 0.70 P.
B. 0.75 P.
C. 0.80 P.
D. 0.85 P.
Answer = 0.85 P
230. A pug mill is used for.
A. softening brick earth.
B. moulding brick earth.
C. tempering brick earth.
D. all the above..
Answer = tempering brick earth
231. A good brick earth should contain :.
A. about 20% to 30% of alumina.
B. about 50% to 60% of silica.
C. not more than 5% of lime.
D. All the above..
Answer = All the above.
232. The commonly used lime in white washing, is.
A. white lime.
B. fat lime.
C. hydraulic lime.
D. quick lime..
Answer = fat lime
233. Shingle is.
A. decomposed laterite.
B. crushed granite.
C. water bound pebbles.
D. air weathered rock..
Answer = decomposed laterite
234. Pick up the plutonic rock from the following:.
A. Granite.
B. Dolerite.
C. Basalt.
D. All the above..
Answer = Granite
235. The lime which contains mainly calcium oxide and slacks with water, is.
A. fat lime.
B. quick lime.
C. hydraulic lime.
D. none of these..
Answer = quick lime
236. Seasoning is.
A. a process of removing sap.
B. creosoting.
C. painting with sodium silicate.
D. coating with tar..
Answer = a process of removing sap
237. Inhaling of fly-ash over a long period causes.
A. silicosis.
B. fibrosis of lungs.
C. bronchitis.
D. All of these..
Answer = All of these.
238. Minimum required water cement ratio for a workable concrete, is.
A. 0.3.
B. 0.4.
C. 0.5.
D. 1.0..
Answer = 0.4
239. Rocks formed due to alteration of original structure due to heat and excessive pressure are called.
A. sedimentary rocks.
B. igneous rocks.
C. metamorphic rocks.
D. none of these..
Answer = metamorphic rocks
240. The compound of Portland cement which contributes to the strength after two to three years is.
A. Tricalcium silicate.
B. Di-calcium silicate.
C. Tricalcium aluminate.
D. Tetracalcium alumino ferrite..
Answer = Di-calcium silicate
241. For slaking of 10 kg of CaO, the theoretical amount of water is.
A. 2.2 kg.
B. 1.5 kg.
C. 3.2 kg.
D. None of these..
Answer = 3.2 kg
242. Pick up the correct statement from the following: Method of sawing timber.
A. tangentially to annual rings, is known as tangential method..
B. in four quarters such that each board cuts annual rings at angles not less than 45°, is known as quarter sawing method..
C. cut out of quarter logs, parallel to the medullary rays and perpendicular to annual rings, is known as radial sawing..
D. all the above..
Answer = all the above.
243. Clay and silt content in a good brick earth must be at least.
A. 0.5.
B. 0.4.
C. 0.3.
D. 20%..
Answer = 0.5
244. Bessemer process is used for the manufacture of.
A. Pig iron.
B. cast iron.
C. Wrought iron.
D. Steel..
Answer = Steel.
245. The portion of the brick without a triangular corner equal to half the width and half the length, is called.
A. closer.
B. queen closer.
C. king closer.
D. squint brick..
Answer = king closer
246. The standard size of masonry bricks, is.
A. 18 cm x 8 cm x 8 cm.
B. 19 cm x 9 cm x 9 cm.
C. 20 cm x 10 cm x 10 cm.
D. none of these..
Answer = 19 cm x 9 cm x 9 cm
247. Which one of the following is an air binding material ?.
A. Gypsum.
B. Acid-resistant cement.
C. Quick lime.
D. All of these..
Answer = All of these.
248. A good quality stone absorbs water less than.
A. 0.05.
B. 0.1.
C. 0.15.
D. 25%..
Answer = 0.05
249. Pick up the correct statement from the following:.
A. Alexander Parkes, a Scottish chemist prepared a hard material by mixing camphor and alcohol with nitro cellulose and called it, as Parkesite.
B. Dr. L. Bakeland, a Belgian scientist prepared a product known as Bakelite.
C. Pollark, an Austrian scientist prepared a substance from urea and formaldehyde and called it Plastic.
D. All the above..
Answer = All the above.
250. Plywood is made from.
A. common timber.
B. bamboo fibre.
C. teak wood only.
D. asbestos sheets..
Answer = teak wood only
251. Soundness test of cement determines.
A. quality of free lime.
B. ultimate strength.
C. durability.
D. all the above..
Answer = quality of free lime
252. The slag which floats on the surface of the molten iron generally contains.
A. Lime (CaO) 45%.
B. Silica (SiO2) 35%.
C. Alumina (Al2O3) 12%.
D. all the above..
Answer = all the above.
253. Minimum of 40% of iron, is available in.
A. Magnetite.
B. Red haemetite.
C. Limonite.
D. Black band..
Answer = Black band.
254. If the iron ore contains clay as an impurity, the flux added during calcination, is.
A. clay.
B. lime stone.
C. argillaceous iron ore.
D. all the above..
Answer = lime stone
255. Cement is said to be of good quality if.
A. its colour is not greenish grey.
B. one feels cool by thrusting one's hand in the cement bag.
C. it is not smooth when rubbed in between fingers.
D. none of these..
Answer = none of these.
256. Cast steel is manufactured by.
A. Cementation process.
B. Crucible process.
C. Bessemer process.
D. Open hearth process..
Answer = Crucible process
257. For the manufacture of plywood, veneers are placed so that grains of adjacent veneers.
A. run at right angles.
B. parallel.
C. inclined at 45°.
D. inclined at 60°..
Answer = run at right angles
258. A 1st class brick immersed in water for 24 hours, should not absorb water (by weight) more than.
A. 0.1.
B. 0.15.
C. 0.2.
D. 5%..
Answer = 0.2
259. The proportions of charcoal, saltpetre and sulphur in gun powder by weight, are respectively:.
A. 15, 75, 10.
B. 75, 10, 15.
C. 10, 15, 75.
D. 10, 75, 15..
Answer = 15, 75, 10
260. Geologically, marble is known as.
A. sedimentary rock.
B. igneous rock.
C. metamorphic rock.
D. stratified rock..
Answer = metamorphic rock
261. The silica is used for preparing.
A. silica bricks.
B. coke oven.
C. lining for glass furnaces.
D. all of these..
Answer = all of these.
262. Wrought iron is manufactured from pig iron by.
A. refining.
B. pudding.
C. shingling.
D. all the above..
Answer = all the above.
263. Pick up the correct statement from the following:.
A. The phenol is carbolic acid.
B. The phenol is either extracted from coal-tar or prepared from benzene.
C. Phenol reacts with formaldehyde, to form phenol formaldehyde resin.
D. All the above..
Answer = All the above.
264. Fibre boards can be.
A. distempered.
B. painted.
C. painted and distempered.
D. used for furniture..
Answer = used for furniture.
265. Pick up the correct statement from the following:.
A. Catalysts are added to assist and accelerate the hardening of resin,.
B. The fillers are inert materials and they impart strength and hardness.
C. Fibrous fillers increase thermal resistance.
D. All the above..
Answer = All the above.
266. Portland pozzolana cement possesses.
A. higher resistance to chemical attack.
B. lower heat of hydration.
C. lower shrinkage on drying.
D. all the above..
Answer = all the above.
267. Iron ore may contain.
A. carbon.
B. silicon.
C. sulphur.
D. all the above..
Answer = all the above.
268. Wrought iron is used for.
A. structural works in beams.
B. small sized water pipes.
C. columns and struts.
D. none to these..
Answer = small sized water pipes
269. The timber having maximum resistance against white ants, is obtained from.
A. chir.
B. shisham.
C. sal.
D. teak..
Answer = sal
270. Knots in timber are.
A. defects caused by crushing fibres.
B. splits radiating from the centre.
C. speckled strains.
D. signs of branches cut off..
Answer = signs of branches cut off.
271. Pick up the correct statement from the following:.
A. Solder material is an alloy which melts at a temperature above 400°C.
B. Brazing is done at temperature above 600°C to 1100°C.
C. Brazing joint is stronger than the solder joint.
D. all the above..
Answer = all the above.
272. Lime concrete is generally used for.
A. wall foundations.
B. flooring at ground level.
C. both (a) and (b).
D. neither (a) nor (b)..
Answer = flooring at ground level
273. Bituminous fells are used for.
A. covering A..
B. sheets.
C. covering sloping roofs.
D. P..
Answer = covering A.
274. The minimum compressive strength of Ilnd class bricks should be.
A. 75 kg/cm2.
B. 90 kg/cm2.
C. 100 kg/cm2.
D. 150 kg/cm2..
Answer = 75 kg/cm2
275. Stuco paints are suitable for.
A. stone masonry.
B. brick walls.
C. both (a) and (b).
D. neither (a) nor (b)..
Answer = both (a) and (b)
276. Pick up the correct statement from the following:.
A. Corrugated sheet iron is made by passing plain sheets between grooved rollers.
B. Strength and stiffness of corrugated sheets are considerably increased.
C. Corrugated sheets are generally gal-venised to protect iron from corrosion by rust.
D. all the above..
Answer = all the above.
277. Quick setting cement is produced by adding.
A. less amount of gypsum in very fine powdered form.
B. more amount of gypsum in very fine powdered form.
C. aluminium sulphate in very fine powdered form.
D. none of these..
Answer = aluminium sulphate in very fine powdered form
278. Duco is one of the patent forms of.
A. emulsion paints.
B. plastic paints.
C. bituminous paints.
D. cellulose paints..
Answer = cellulose paints.
279. Pick up the correct statement from the following:.
A. The substance which consists of one primary chemical, is known as monomer.
B. The polymer consists of thousands of monomers joined together.
C. The polymer molecule is called macro-molecule.
D. All the above..
Answer = All the above.
280. Bulking of sand is caused due to.
A. surface moisture.
B. air voids.
C. viscosity.
D. all the above..
Answer = surface moisture
281. The normal curing period for lime mortar, is:.
A. one day.
B. 3 days.
C. 7 days.
D. 14 days..
Answer = 7 days
282. The type of steel used for precision levelling staff, is.
A. Titanium steel.
B. Carbon steel.
C. Invar.
D. Stainless steel..
Answer = Invar
283. During pudding.
A. molten metal is kept clear of the fuel.
B. carbon is converted into carbonic acid gas.
C. silicon forms a slag.
D. all the above..
Answer = all the above.
284. German silver is an alloy of.
A. zinc, lead and nickel.
B. silver, gold and lead.
C. copper, nickel and zinc.
D. brass, silver and zinc..
Answer = copper, nickel and zinc
285. Pick up the incorrect statement from the following:.
A. Plastics are chemical resistant.
B. Plastics are durable.
C. Plastics are ductile.
D. Plastics are excellent electric insulators..
Answer = Plastics are ductile
286. Pick up correct statement from the following:.
A. Fibre boards are used for thermal and acoustic control.
B. Fibre boards are used for light weight standing members.
C. Fibre boards are obtained by impregnating a resin product on fibres.
D. all the above..
Answer = all the above.
287. Quartzite, a metamorphic stone is.
A. hard.
B. brittle.
C. crystalline.
D. All the above..
Answer = All the above.
288. Pick up the correct statement from the following:.
A. Plastics have generally low melting point.
B. The coefficient of thermal expansion of plastics is about three times than that of steel.
C. The acoustical boards prepared by impregnating fibre-glass with phenolic resins has absorption coefficient of about 0.67.
D. All the above..
Answer = All the above.
289. Dextrin is.
A. animal glue.
B. starch glue.
C. albumin glue.
D. none to these..
Answer = none to these.
290. Formula for quick lime, is.
A. CaCO3.
B. CaO.
C. CO3CO2.
D. none to these..
Answer = CaO
291. For the manufacture of stainless steel, steel is mixed with.
A. chromium.
B. nickel.
C. tungsten.
D. none of these..
Answer = chromium
292. Stones used for ornamental work must be.
A. soft.
B. hard.
C. light.
D. heavy..
Answer = soft
293. Pick up the correct statement from the following:.
A. Quick lime is obtained by burning pure lime stone:.
B. Hydraulic lime is obtained by burning lime stone containing clay 5% to 30%.
C. Poor lime is obtained by burning lime stone containing impurities more than 5%.
D. All the above..
Answer = All the above.
294. The presence of original rounded surface on the manufactured piece of timber, is called.
A. Wane.
B. Torn grain.
C. Diagonal grain.
D. Chipmark..
Answer = Wane
295. Smith's test of stones is performed to find out.
A. the presence of soluble matter of stone.
B. the compressive strength of the stone.
C. the hardness of the stone.
D. the toughness of the stone..
Answer = the presence of soluble matter of stone
296. The cracks caused by shrinkage of the exterior surface of the wood exposed to atmosphere, are called:.
A. radial shakes.
B. heart shakes.
C. wind cracks.
D. twisted fibres..
Answer = wind cracks
297. The process of decarbonising the pig iron completely and then adding proper percentage of carbon for manufacturing steel, is called.
A. Cementation process.
B. crucible process.
C. Bessemer process.
D. Open hearth process..
Answer = Cementation process
298. In paints, the pigment is responsible for.
A. durability.
B. colour.
C. smoothness.
D. none of these..
Answer = colour
299. The operation of removal of impurities or clay adhering to iron ores, is known as.
A. dressing.
B. calcination.
C. roasting.
D. smelting..
Answer = dressing
300. If water required for 1 bag of cement is 30 litres, the water cement ratio is :.
A. 0.4.
B. 0.5.
C. 0.6.
D. None of these..
Answer = 0.6
301. Portland cement manufactured from pure white chalk and clay but free from iron-oxide, is known as.
A. quick setting cement.
B. rapid hardening cement.
C. white cement.
D. low heat Portland cement..
Answer = white cement
302. Dry rot.
A. cracks the timber.
B. reduces the strength of timber.
C. reduces the timber to powder.
D. spoils the appearance of timber..
Answer = reduces the timber to powder
303. Which one of the following polymers is obtained from condensation polymerization ?.
A. phenol formaldehyde.
B. carbamide.
C. melamine-formaldehyde.
D. all of these..
Answer = all of these.
304. The weight of 1 m3 of brick earth, is about.
A. 1200 kg.
B. 1500 kg.
C. 1800 kg.
D. 2000 kg..
Answer = 1800 kg
305. Pozzolana (or surkhi) is used in lime.
A. to impart hydraulicity.
B. to prevent shrinkage.
C. to decrease the cost of construction.
D. to decrease the setting time..
Answer = to impart hydraulicity
306. Quick lime.
A. generates heat when added to water.
B. reacts with carbon dioxide.
C. may be used for white-washing.
D. all the above..
Answer = all the above.
307. Age of a tree may be ascertained by.
A. radius of its stem.
B. circumference of its stem.
C. number of branches.
D. number of annual rings..
Answer = number of annual rings.
308. The portion of a brick cut to form angles other than right angles in plan, is known as.
A. queen closer.
B. king closer.
C. closer.
D. squint brick..
Answer = squint brick.
309. Pick up the correct statement from the following:.
A. Slaked lime contains calcium hydroxide.
B. Quick lime contains calcium oxide.
C. Slaked lime may be obtained from quick lime.
D. All the above..
Answer = All the above.
310. Plywood is obtained by gluing wooden sheets at.
A. 100 to 150 N/cm2.
B. 100 to 130°C.
C. both (a) and (b).
D. Neither (a) nor (b)..
Answer = both (a) and (b)
311. The low voltage porcelain is mainly used for.
A. switch block.
B. insulating tubes.
C. lamp sockets.
D. All of these..
Answer = All of these.
312. Putty is.
A. made with finely powdered chalk and linseed oil.
B. used for fixing glass panes.
C. softened by a solution of pearl ash and quick-lime soaked in water.
D. all the above..
Answer = all the above.
313. The initial setting time of hydraulic lime, is.
A. 30 minutes.
B. 60 minutes.
C. 90 minutes.
D. 120 minutes.
Answer = 120 minutes
314. PVC stands for.
A. plastic very compact.
B. polythene vinyl chloride.
C. polythene vinyl carbon.
D. polythene vanadium carbide..
Answer = polythene vinyl chloride
315. Generally wooden moulds are made from.
A. ply wood.
B. shisham wood.
C. deodar wood.
D. hard wood..
Answer = shisham wood
316. Cement paints usually.
A. contain hydrated lime.
B. contain 5% to 10% colour pigments.
C. are prepared with white cement.
D. all the above..
Answer = all the above.
317. The cement becomes unsound by the presence of excess.
A. sulphur.
B. magnesia.
C. lime.
D. All of these..
Answer = All of these.
318. The kiln which may work throughout the year, is.
A. Clamp.
B. Bull's kiln.
C. Hoffman's kiln.
D. none of these..
Answer = Hoffman's kiln
319. The minimum compressive strength of 1st class bricks should be.
A. 75 kg/cm2.
B. 90 kg/cm2.
C. 100 kg/cm2.
D. 130 kg/cm2..
Answer = 100 kg/cm2
320. A volatile substance added to a paint to make its application easy and smooth, is known as.
A. base.
B. solvent.
C. vehicle.
D. none to these..
Answer = solvent
321. The percentage of water for normal consistency, is.
A. 5% to 15%.
B. 10% to 25%.
C. 15% to 25%.
D. 25% to 35%..
Answer = 25% to 35%.
322. Pick up the correct statement from the following:.
A. The plywoods do not split or crack due to changes in atmosphere.
B. The commercial plywoods are available upto 150 cm wide and upto 300 cm long.
C. The plywoods possess uniform tensile strength in all directions.
D. All the above..
Answer = All the above.
323. The main ingredient of a good quality brick earth, is.
A. magnesia.
B. lime.
C. silica.
D. alumina..
Answer = alumina.
324. Bitumen is generally obtained from.
A. organic material.
B. synthetic material.
C. petroleum product.
D. coal..
Answer = petroleum product
325. For one cubic metre of brick masonry, number of bricks required, is.
A. 400.0.
B. 425.0.
C. 450.0.
D. 500.0.
Answer = 500.0
326. The steel which contains fissures and cavities, is manufactured by.
A. Cementation process.
B. Crucible process.
C. Bessemer process.
D. Open hearth process..
Answer = Cementation process
327. Pick up the volcanic rock from the following:.
A. Granite.
B. Dolerite.
C. Basalt.
D. All the above..
Answer = Basalt
328. In stone masonry, stones (stratified rocks) are so placed that the direction of pressure to the plane of bedding is.
A. right angles.
B. 45°.
C. 60°.
D. None of these..
Answer = right angles
329. The most durable varnish is.
A. water varnish.
B. spirit varnish.
C. turpentine varnish.
D. oil varnish.
Answer = oil varnish
330. Softer variety of steel may be obtained by.
A. Cementation process.
B. crucible process.
C. Bessemer process.
D. Open hearth process..
Answer = Bessemer process
331. Pick up the correct statement from the following:.
A. The baked earth is called terra-cotta.
B. The articles prepared from clay which is burnt at low temperature and cooled down slowly, are called earthen-ware.
C. The articles prepared from refractory clays which as mixed with stone and crushed pottery, are called stone ware.
D. All the above..
Answer = All the above.
332. Calcination of iron ores is done.
A. to remove moisture.
B. to remove carbonic acid.
C. by roasting in heaps.
D. all the above..
Answer = all the above.
333. Strength of cement concrete primarily depends upon.
A. quality of water.
B. quantity of aggregate.
C. quantity of cement.
D. water-cement ratio..
Answer = water-cement ratio.
334. Rapid hardening cement contains.
A. Tri-calcium silicate.
B. Tri-calcium aluminate.
C. Tetra-calcium alumino-ferrite.
D. Dicalcium silicate..
Answer = Tri-calcium silicate
335. Bitumen emulsion is.
A. a liquid containing bitumen in suspension.
B. a paint.
C. used as anti-corrosive paint.
D. all the above..
Answer = all the above.
336. The cast iron when heated to red heat with powdered red haemetite in an oven for increasing its toughness, is converted to.
A. grey cast iron.
B. white cast iron.
C. mottled cast iron.
D. toughed cast iron..
Answer = mottled cast iron
337. Jhumb bricks are.
A. under burnt.
B. over burnt.
C. kutcha.
D. none of these..
Answer = over burnt
338. Plastic bitumen is generally used for.
A. road pavements.
B. expansion joints.
C. crack fillings.
D. none to these..
Answer = crack fillings
339. Pick up the correct statement from the following:.
A. The heating of a material to redness in contact with air, is known as calcination.
B. The property of lime by which it sets or hardens in damp places having no free circulation of air is called setting.
C. The product that remains after calcination of limestone, is called lime.
D. All the above..
Answer = All the above.
340. The commonly used thinner in oil paints, is.
A. naptha.
B. turpentine.
C. both (a) and (b).
D. none the these..
Answer = both (a) and (b)
341. Cast iron.
A. is obtained by purifying pig iron.
B. is manufactured in required shapes.
C. may contain 2 to 5 per cent of carbon with other impurities.
D. all the above..
Answer = all the above.
342. Asbestos is.
A. corrugated sheet used for roofing.
B. an incombustible fire proof material.
C. an organic substance.
D. all the above..
Answer = all the above.
343. In a rock calcium carbonate predominates. State whether it is :.
A. Sillicious rock.
B. Argillaceous rock.
C. Calcareous rock.
D. None of these..
Answer = Calcareous rock
344. In order of increasing percentage of silica, the correct sequence is.
A. sandy clay, calcareous clay, pure clay.
B. calcareous clay, pure clay, sandy clay.
C. pure clay, sandy clay, calcareous clay.
D. None of these..
Answer = calcareous clay, pure clay, sandy clay
345. The rocks which are formed due to pouring of magma at the earth's surface are called.
A. Plutonic rocks.
B. Hypabyssal rocks.
C. Volcanic rocks.
D. Igneous rocks.
Answer = Volcanic rocks
346. Pick up the correct statement from the following:.
A. Steel produced by open hearth process is milder than that obtained by the bessemer process.
B. Engineers prefer open hearth steel for structural purpose as it is more homogenous.
C. Basic Bessemer process is suitable for converting poor ore containing a large proportion of sulphur and phosphorus into steel.
D. all the above..
Answer = all the above.
347. Pick up the correct statement from the following:.
A. The distinct plane of division along which a stone can easily be split, is called natural bed of stone.
B. The natural bed of sedimentary rocks is along the planes of stratification.
C. The natural bed of igneous rocks is not defined.
D. All the above..
Answer = All the above.
348. Invar contains.
A. 12% of nickel.
B. 24% of nickel.
C. 30% to nickel.
D. 36% of nickel..
Answer = 36% of nickel.
349. The cracks which extend from bark towards the sap wood in the cross section of a tree, are called.
A. radial shakes.
B. star shakes.
C. heart shakes.
D. cup shakes..
Answer = star shakes
350. Sea sand used in structures causes.
A. dampness.
B. efflorescence.
C. disintegration.
D. All of these..
Answer = All of these.
351. The compound of Portland cement which reacts immediately with water and also sets first is.
A. Tri-calcium silicate.
B. Di-calcium silicate.
C. Tri-calcium aluminate.
D. Tetra calcium alumino ferrite..
Answer = Tri-calcium aluminate
352. Refractory bricks resist.
A. high temperature.
B. chemical action.
C. dampness.
D. all the above..
Answer = high temperature
353. When a brick is immersed in water for 24 hours and then dried, if.
A. no grey or white deposits appear on the surface, the brick is free from soluble salts.
B. 10 per cent surface is covered with grey or white deposits, the brick has slight efflorescence.
C. 50 per cent surface is covered with grey or white deposits, the brick has serious efflorescence.
D. All the above..
Answer = All the above.
354. In arches, stratified stones are placed so that their planes are.
A. parallel.
B. perpendicular.
C. radial.
D. none of these..
Answer = radial
355. Pick up the correct statement from the following:.
A. Acid test is done to find out the weathering quality of stones.
B. Attrition test is done to find out the rate of wear of stones which are used in road construction.
C. Crushing test is done to find out the compressive strength of the stone.
D. All the above..
Answer = All the above.
356. The fire clay contains pure.
A. lime.
B. oxide of iron.
C. hydrated aluminium silicate.
D. magnesium..
Answer = hydrated aluminium silicate
357. Pick up the correct characteristic of Pyroxene from the following:.
A. It forms octagonal crystals.
B. It converts to chlorine by hydration.
C. Its density is 2.3 to 3.6 g/cm2.
D. All the above..
Answer = All the above.
358. For sanitary pipes and chemical stonewares,.
A. salt glazing is used.
B. lead glazing is used.
C. opaque glazing is used.
D. None of these..
Answer = salt glazing is used
359. The steel used for rails under heavy traffic and on sharp curves, is.
A. Nickel steel.
B. Chrome steel.
C. Magnese steel.
D. Vanadium steel..
Answer = Magnese steel
360. The weight of a good quality brick when immersed in water for a period of 16 hours should not exceed the weight of dry brick.
A. 0.2.
B. 0.15.
C. 0.1.
D. None of these..
Answer = 0.2
361. Snowcrete is one of the patent forms of.
A. distempers.
B. water proof cement paints.
C. enamel paints.
D. cellulose paints..
Answer = water proof cement paints
362. The usual percentages of clay and metal in cermet are :.
A. 50%, 50%.
B. 60%, 40%.
C. 70%, 30%.
D. 80%, 20%..
Answer = 80%, 20%.
363. Pick up the correct statement from the following:.
A. Horn blende mineral is brittle.
B. Muscovite is also known as white mica and potashmica.
C. Biotite is also known as blackmica.
D. All the above..
Answer = All the above.
364. The rocks which are formed due to cooling of magma at a relatively shallow depth from the earth's surface are called.
A. Plutonic rocks.
B. Hypabyssal rocks.
C. Volcanic rocks.
D. Ignoeous rocks..
Answer = Hypabyssal rocks
365. The base material for distemper, is.
A. chalk.
B. lime.
C. lime putty.
D. cement wash..
Answer = chalk
366. The thermosetting plastic.
A. becomes rigid when moulded at suitable pressure and temperature.
B. at 127°C to 177°C permanently set and further application of heat does not soften it.
C. charrs at 343°C.
D. All the above..
Answer = All the above.
367. Pick up the synthetic resin from the following:.
A. Malamine resin.
B. Phenolic resin.
C. Resorcinol resin.
D. All of these..
Answer = All of these.
368. Slacking of lime is affected by.
A. keeping it exposed to air.
B. immersing the lime in water.
C. crushing the lime lumps.
D. none of these..
Answer = immersing the lime in water
369. Mastic asphalt is.
A. water proof.
B. fire proof.
C. elastic.
D. all the above..
Answer = all the above.
370. Non acid-resistant asbestos is :.
A. tremolite asbestos.
B. chrysolite abestos.
C. amosite absestos.
D. none of these..
Answer = chrysolite abestos
371. Stones used for the construction of retaining walls must be.
A. soft.
B. hard.
C. light.
D. heavy..
Answer = heavy.
372. Permanent magnets are made of high carbon steel and.
A. 15% of cobalt.
B. 20% of cobalt.
C. 35% of cobalt.
D. 45% of cobalt..
Answer = 45% of cobalt.
373. Plastics are compounds of carbon with element.
A. hydrogen.
B. nitrogen.
C. oxygen.
D. All of these..
Answer = All of these.
374. Pick up the correct statement from the following:.
A. The plastic bottles are made by the process of blowing.
B. The plastic sheets are made by the calendering process in which the plastic material is allowed to pass between cylindrical rollers.
C. The application of thermo-setting resins on sheets of paper, is called laminating process.
D. All the above..
Answer = All the above.
375. Pick up the constituent of good brick earth whose excess causes the raw bricks shrink and warp during drying and burning, from the following:.
A. Alumina.
B. Lime.
C. Ironoxide.
D. Magnesia..
Answer = Alumina
376. Cast iron is used for.
A. structural works in beams.
B. small sized water pipes.
C. columns and struts.
D. none to these..
Answer = columns and struts
377. Stainless steel resists corrosion due to.
A. carbon.
B. sulphur.
C. vanadium.
D. chromium.
Answer = chromium
378. Commonly used thinner in.
A. lacquer paints, is alcohol.
B. cellulose paints is ethyle acetate.
C. oil paints, is naptha.
D. all the above..
Answer = all the above.
379. Good quality sand is never obtained from.
A. river.
B. nala.
C. sea.
D. gravel powder..
Answer = sea
380. Pick up the rock which is not a sedimentary rock from the following:.
A. gravel.
B. sand stone.
C. gypsum.
D. dolerite.
Answer = dolerite
381. For a good building stone, its specific gravity should the greater than.
A. 1.5.
B. 1.7.
C. 2.2.
D. 2.7..
Answer = 2.7.
382. Blister steel.
A. is obtained by cementation process.
B. is full of fissures and cavities.
C. can not be forged.
D. all the above..
Answer = all the above.
383. The most important constituent of varnish, is.
A. drier.
B. solvent.
C. resin.
D. all the above..
Answer = all the above.
384. A ferrous metal is.
A. cast iron.
B. wrought iron.
C. steel.
D. all the above..
Answer = all the above.
385. For making fly-ash building bricks, the following mix of fly-ash, sand and lime, is.
A. 03-Jan-1900.
B. 02-Jan-1900.
C. 02-Jan-1900.
D. none of these..
Answer = 03-Jan-1900
386. Pick up the correct statement from the following:.
A. Lime is available in free state.
B. Lime is available by dissolving calcium carbonate in water.
C. Lime is available by calcining calcium carbonate at 900°C.
D. None of these..
Answer = Lime is available by calcining calcium carbonate at 900°C
387. Water paint is a.
A. white wash.
B. colour wash.
C. whiting.
D. all the above..
Answer = all the above.
388. Seasoning of timber is done.
A. to make it water proof.
B. to paint its surface.
C. to increase its temperature.
D. to remove water..
Answer = to remove water.
389. The specific gravity of marble, is.
A. 2.5.
B. 2.6.
C. 2.66.
D. 2.72.
Answer = 2.72
390. The rocks having alumina or clay as their major constituents, are known as.
A. siliceous rocks.
B. argillaceous rocks.
C. calcareous rocks.
D. igneous rocks..
Answer = argillaceous rocks
391. The curved swellings from the growth of layers or wounds left after branches are cut off in an irregular manner, are known as.
A. knots.
B. rindgalls.
C. burls.
D. none of these..
Answer = rindgalls
392. Glazing of clay products, is done.
A. to improve their appearance.
B. to protect them from atmospheric effect.
C. to protect them from corrosive action.
D. all the above..
Answer = all the above.
393. Lime mortar is generally made with.
A. quick lime.
B. fat lime.
C. hydraulic lime.
D. none of these..
Answer = hydraulic lime
394. Duco paints are.
A. plastic paints.
B. cellulose paints.
C. emulsion paints.
D. oil paints..
Answer = oil paints.
395. Pick up the correct statement from the following:.
A. Melamine is obtained from calcium carbide.
B. Formaldehyde is prepared synthetically from methane.
C. The melamine when reacted with formaldehyde forms the melamine-formaldehyde resin.
D. All the above..
Answer = All the above.
396. Steel contains carbon approximately.
A. 1.50% to 5.6%.
B. 0.05% to 1.75%.
C. 0.0025.
D. none to these..
Answer = 0.05% to 1.75%
397. Cast iron contains carbon approximately.
A. 1.5% to 5.5%.
B. 0.05% to 1.75%.
C. 0.0025.
D. none to these..
Answer = 1.5% to 5.5%
398. Plastic asphalt is.
A. used as a water proofing layer over roof.
B. a mixture of cement and asphalt.
C. a natural asphalt.
D. a refinery product..
Answer = a mixture of cement and asphalt
399. For obtaining vinyl chloride acetate, the method used, is.
A. addition polymerization.
B. condensation polymerization.
C. co-polymerization.
D. none of these..
Answer = co-polymerization
400. The yield strength and tensile strength of low carbon steel may be improved by the addition of.
A. manganese.
B. chromium.
C. nickel.
D. venadium.
Answer = venadium
401. Bitumen completely dissolves in.
A. carbon bisulphide.
B. chloroform.
C. benzol.
D. All of these..
Answer = All of these.
402. Good quality cement contains higher percentage of.
A. Tricalcium silicate.
B. Di-calcium silicate.
C. Tri-calcium aluminate.
D. all the above..
Answer = Tricalcium silicate
403. Soundness of cement is tested by.
A. Vicat's apparatus.
B. Le-chatelier apparatus.
C. compressive strength testing apparatus.
D. none of the these..
Answer = Le-chatelier apparatus
404. The PVC doors and windows are preferred as they are.
A. rust proof.
B. rot proof.
C. termile proof.
D. all of these..
Answer = all of these.
405. Based on its dry weight, a freshly felled tree may contain water.
A. 0.25.
B. 0.5.
C. 0.75.
D. 100%..
Answer = 100%.
406. Forge pig may be converted to wrought iron by.
A. rolling.
B. pudding.
C. shingling.
D. refining..
Answer = pudding
407. To give a brilliant finish, the type of varnish used, is.
A. water varnish.
B. spirit varnish.
C. turpentine varnish.
D. none of these..
Answer = spirit varnish
408. Pick up the correct statement from the following:.
A. Bull's trench kiln a trench excavated in ground.
B. Hoffman's kiln is constructed overground.
C. Tunnel Kiln is constructed as a tunnel.
D. All the above..
Answer = All the above.
409. The softest rock is.
A. marble.
B. diamond.
C. talc.
D. quartz..
Answer = talc
410. Bitumen may be dissolved in.
A. carbondioxide.
B. water.
C. sodium chloride.
D. carbon disulphideE.none of these..
Answer = carbon disulphideE.none of these.
411. Pick up the correct statement from the following:.
A. Rusting is caused due to combined action of air, moisture and carbon dioxide.
B. During rusting, first ferrous bicarbonates are formed.
C. On further oxidation ferrous bicarbonates get converted to ferric bicarbonates.
D. All the above..
Answer = All the above.
412. Whitworth compressed steel is obtained when molten steel is subjected to a pressure of.
A. 5 kg/mm2.
B. 9 kg/mm2.
C. 13 kg/mm2.
D. 10 kg/mm2..
Answer = 9 kg/mm2
413. Asbestos.
A. is an excellant insulator for heat and electricity.
B. is fire-proof and acid proof.
C. has sp. gravity equal to 3.10.
D. All the above..
Answer = All the above.
414. Mild steel is used for.
A. structural works in beams, joints and girders.
B. small sized water pipes.
C. columns and struts.
D. none of these..
Answer = structural works in beams, joints and girders
415. The sequence of refractory materials according to increasing melting points is :.
A. Dolomite, Magnesia, Bauxite, Chromite.
B. Bauxite, Chromite, Dolomite, Magnesia.
C. Magnesia, Bauxite, Dolomite, Chromite..
D. None of the mentioned.
Answer = Bauxite, Chromite, Dolomite, Magnesia
416. Veneering means.
A. carving out designs on timber planks.
B. chemically treating timber planks.
C. thick layer of superior wood glued to inferior wood.
D. thin layer of superior wood glued to inferior wood..
Answer = thick layer of superior wood glued to inferior wood
417. Laterite is a/an.
A. volcanic rock.
B. argillaceous rock.
C. calcareous rock.
D. silicious rock..
Answer = argillaceous rock
418. A stone is rejected if it absorbs water more than.
A. 0.05.
B. 0.1.
C. 0.15.
D. 25%..
Answer = 0.1
419. The most valuable timber may be obtained from.
A. chir.
B. shisham.
C. sal.
D. teak..
Answer = teak.
420. Pick up the correct statement from the following:.
A. Blisters in the finished wrought iron, are caused due to the reaction between oxide of iron and carbon.
B. The edges of a finished wrought iron, are rough due to red shortage.
C. Pig iron (charcoal) is manufactured from magnetic ore (Fe3O4).
D. All the above..
Answer = All the above.
421. Pick up the compound responsible for early strength of cement from the following:.
A. Tetra-calcium alumino-ferrite.
B. Tricalcium silicate.
C. Tricalcium aluminate.
D. Dicalcium silicate..
Answer = Tricalcium silicate
422. Mastic asphalt is.
A. acid resisting material.
B. non-corrosive material.
C. corrosive material.
D. heating-resisting material..
Answer = non-corrosive material
423. Which one of the following is used for preparing porcelain.
A. clay.
B. feldspar.
C. quartz.
D. All of these..
Answer = All of these.
424. The commonly used base for iron and steel work, is.
A. red lead.
B. zinc white.
C. white lead.
D. titanium white..
Answer = red lead
425. Lacquer is.
A. oil paint.
B. distemper.
C. spirit varnish.
D. none to these..
Answer = spirit varnish
426. Upto a maximum of 72% of iron, is available in.
A. Magnetite.
B. Red haemetite.
C. Limonite.
D. Iron pyrites..
Answer = Magnetite
427. Pig iron made from heamatite ores free from sulphur, phosphorus and copper, is known as.
A. Bessemer pig.
B. Grey or foundry pig.
C. White or forge pig.
D. All the above..
Answer = Bessemer pig
428. Pick up the correct statement from the following:.
A. Blistering may be cured by applying water paint finished with oil paint dried with a little copal varnish.
B. Cracked paints may be cured by removing paint and giving a fresh coat of paint.
C. Crawling paints may be cured by sand preparing the surface and giving a fresh coat with plenty of turps.
D. All the above..
Answer = All the above.
429. The material generally not used as extender in paints, is.
A. powdered silica.
B. gypsum.
C. talc.
D. zinc white..
Answer = zinc white.
430. Pick up the non-inflammable plastic from the following:.
A. Cellulose acetate plastics.
B. Polyvinyl chloride plastics.
C. Phenol formaldehyde plastic.
D. Urea formaldehyde plastic..
Answer = Polyvinyl chloride plastics
431. The most commonly used synthetic abrasive is.
A. aluminium carbide.
B. boric acid.
C. silicon.
D. All of these..
Answer = All of these.
432. For light and ornamental casting, the most unsuitable pig iron, is.
A. Bessemer pig.
B. Grey or foundry pig.
C. White or forge pig.
D. Mottled pig..
Answer = Mottled pig.
433. Seasoning of timber is essential to remove.
A. knots from timber.
B. sap from timber.
C. twisted fibre from timber.
D. roughness of timber..
Answer = sap from timber
434. The melting point of silica is :.
A. 1570°C.
B. 1630°C.
C. 1730°C.
D. 1850°.
Answer = 1730°C
435. If the ore impurities is.
A. clay, lime stone is used as flux.
B. lime stone, clay is used as flux.
C. quartz, lime stone and argallaceous iron ores are used as flux.
D. All the above..
Answer = All the above.
436. The plastics prepared from Vinyl resin are.
A. odourless.
B. non-toxic.
C. transparent.
D. all of these..
Answer = all of these.
437. Chlorite, a green colour mineral is mainly derived from the decomposition of.
A. augite.
B. biotite.
C. horn blende.
D. All of these..
Answer = augite
438. During smelting process, the combination of fuel in the furnace.
A. forms carbon dioxide.
B. carbon dioxide with carbon forms carbon mono-oxide.
C. carbon mono-oxide reacts with Fe2O3 to form iron and liberates CO2.
D. all the above..
Answer = all the above.
439. Lime stones are generally known as.
A. aqueous rocks.
B. sedimentary rocks.
C. stratified rocks.
D. all the above..
Answer = all the above.
440. The method of addition polymerization is used for obtaining:.
A. polythylene.
B. polypropylene.
C. polyvinylchloride.
D. All of these..
Answer = All of these.
441. Pick up the correct statement from the following:.
A. The lime in excess makes the cement unsound and causes the cement to expand and disintegrate.
B. The silica in excess makes the cement stronger but its setting time also increases.
C. The excess amount of alumina weakens the cement.
D. All the above..
Answer = All the above.
442. A rock contains only one mineral. It is called.
A. homogeneous.
B. non-homogeneous.
C. monomineralic.
D. polymineralic..
Answer = monomineralic
443. Asbestos.
A. is a natural fibrous mineral substance.
B. is composed of hydrous silicates of calcium and magnesium (CaSiO3, 3MgSiO3).
C. contains iron oxide and alumina.
D. all the above..
Answer = all the above.
444. Pegmatite is a/an.
A. intrusive igneous rock.
B. extrusive igneous rock.
C. sedimentary rock.
D. metamorphic rock..
Answer = intrusive igneous rock
445. The percentage of alumina and silica in good fire clay vary respectively is.
A. 25, 75.
B. 30, 70.
C. 35, 65.
D. All of these..
Answer = 25, 75
446. The term frog means.
A. an apparatus to lift the stone.
B. a depression on a face of brick.
C. vertical joint in a brick work.
D. soaking brick in water..
Answer = a depression on a face of brick
447. Asphalt is obtained from.
A. petroleum distillation.
B. bitumen distillation.
C. plastic distillation.
D. none of these..
Answer = petroleum distillation
448. To retard the initial setting time of cement, the compound responsible, is.
A. Tricalcium silicate.
B. Gypsum.
C. Di-calcium silicate.
D. Tri calcium aluminate..
Answer = Gypsum
449. Dorry's testing machine is used for.
A. crushing test of stone.
B. hardness test of stone.
C. impact test of stone.
D. water absorption test..
Answer = hardness test of stone
450. Stones used for rubble masonry must be.
A. soft.
B. hard.
C. light.
D. heavy..
Answer = hard
451. Index number expressing the relative sizes of both coarse and fine aggregates, is called.
A. proportioning of aggregates.
B. fineness modulus.
C. grading of aggregates.
D. none of these..
Answer = fineness modulus
452. Dolomite is a lime stone which contains carbonate of magnesia upto.
A. 0.15.
B. 0.2.
C. 0.25.
D. 45%..
Answer = 45%.
453. Priming consists of.
A. one part of white lead, 8 parts of chalk and four parts of twice boiled linseed oil.
B. 8 parts of white lead, one part of chalk and four parts of twice boiled linseed oil.
C. one part of white lead, 8 parts of chalk and one part of linseed oil.
D. none to these..
Answer = one part of white lead, 8 parts of chalk and four parts of twice boiled linseed oil
454. The portion of the brick cut across its width and having its length equal to that of a full brick, is known as.
A. closer.
B. queen closer.
C. king closer.
D. none of these..
Answer = queen closer
455. Seasoning of timber is done for.
A. increasing moisture content.
B. decreasing moisture content.
C. increasing strength of timber.
D. none to these..
Answer = decreasing moisture content
456. Bitumen felt is used for.
A. water proofing.
B. damp proofing.
C. both (a) and (b).
D. neither (a) nor (b)..
Answer = both (a) and (b)
457. According to ISI, bitumen is classified into.
A. 2 grades.
B. 4 grades.
C. 6 grades.
D. 10 grades..
Answer = 10 grades.
458. Lime putty.
A. is made from hydraulic lime.
B. is made by adding lime to water.
C. can be used only upto three days.
D. all of above..
Answer = all of above.
459. For a 50 kg cement bag water required, is.
A. 16.5 litres.
B. 18.5 litres.
C. 20.5 litres.
D. 22.5 litres.
Answer = 22.5 litres
460. The presence of sand in brick earth prevents:.
A. cracking of bricks.
B. shrinkage of bricks.
C. warping of bricks.
D. none of these..
Answer = warping of bricks
461. The property by virtue of which lime sets under water, is known as.
A. slacking.
B. setting.
C. hydraulicity.
D. calcining..
Answer = hydraulicity
462. Percentage content of silica in window glass, is.
A. 40 to 45.
B. 50 to 55.
C. 60 to 65.
D. 70 to 75..
Answer = 70 to 75.
463. The coefficient of hardness of stones used in road work should be greater than.
A. 10.0.
B. 12.0.
C. 15.0.
D. None of the mentioned.
Answer = D
464. Pick up the correct statement from the following:.
A. Air bubbles in casting produce a dull sound by tapping their surfaces lightly with a hammer.
B. Cupola furnace is used for the manufacture of cast iron.
C. Red short iron is of no value for welding purpose.
D. All the above..
Answer = All the above.
465. The steel used for the manufacture of rails, is.
A. Bessemer steel.
B. mild steel.
C. cast steel.
D. stainless steel..
Answer = Bessemer steel
466. Slump test for concrete is carried out, to determine.
A. strength.
B. durability.
C. workability.
D. water content..
Answer = workability
467. Basalt is.
A. sedimentary rock.
B. metamorphic rock.
C. extrusive igneous rock.
D. intrusive igneous rock..
Answer = extrusive igneous rock
468. The frog of a brick is normally made on its.
A. top face.
B. bottom face.
C. longer face.
D. shorter side..
Answer = top face
469. The most important constituent of an oil paint, is.
A. thinner.
B. vehicle.
C. pigment.
D. all the above..
Answer = all the above.
470. Granite mainly composed of quartz and felsper particles, is obtained from.
A. sedimentary rocks.
B. metamorphic rocks.
C. igneous rocks.
D. all the above..
Answer = igneous rocks
471. Bullet proof glass is made of thick glass sheet sandwiched by a layer of.
A. steel.
B. stainless steel.
C. high test plastic.
D. chromium plate..
Answer = high test plastic
472. Pig iron obtained from the furnance which is properly provided with fuel at a very high temperature, is called.
A. Bessemer pig.
B. Grey or foundry pig.
C. White or forge pig.
D. None of the above..
Answer = Grey or foundry pig
473. Refractory bricks are.
A. neutral refractory bricks.
B. acid refractory bricks.
C. basic refractory bricks.
D. all the above..
Answer = all the above.
474. Porcelain is used as :.
A. sanitary wares.
B. electric insulators.
C. storage vessels.
D. reactor chambers.
Answer = reactor chambers
475. Durability of building stone is affected by its.
A. chemical composition.
B. texture.
C. resistance to atmosphere.
D. all the above..
Answer = all the above.
476. Magnese steels.
A. are non-magnetic.
B. possess high electrical resistance.
C. possess low coefficient of expansion.
D. all the above..
Answer = all the above.
477. Pick up the metal refractory from the following:.
A. Molyblendum.
B. Tungsten.
C. Zicronium.
D. All of these..
Answer = All of these.
478. According to IS 399-1963, the weight of the timber is specified at.
A. 8% moisture content.
B. 10% moisture content.
C. 12% moisture content.
D. 14% moisture content..
Answer = 12% moisture content
479. Pick up the correct statement from the following:.
A. The free quartz suddenly expands at a temperature lower than 600°C.
B. The lime stone resists fire upto about 800°C and at higher temperature it splits into CaO and CO2.
C. The sand stone with silicates resist a fire in a better way.
D. All the above..
Answer = All the above.
480. The most commonly used base for timber painting, is.
A. red lead.
B. zinc white.
C. white lead.
D. titanium white..
Answer = white lead
481. Pick up the most favourable condition for the rapid growth of fungus for dry rot from the following:.
A. absence of sun light.
B. dampness.
C. presence of sap.
D. All the above.
Answer = All the above
482. The rocks formed from molten magma, are called.
A. sedimentary rocks.
B. igneous rocks.
C. metamorphic rocks.
D. none of these..
Answer = igneous rocks
483. Bitumen paints offer.
A. pleasing surface.
B. hard surface.
C. smooth surface.
D. protective surface.
Answer = protective surface
484. Pick up the correct statement from the following:.
A. Styrene resin is produced from ethylene which is made from petroleum.
B. Styrene resin is light in weight.
C. Styrene resin transmits ultraviolet waves of light.
D. All the above..
Answer = All the above.
485. The lime which contains high percentage of calcium oxide, is generally called.
A. fat lime.
B. rich lime.
C. white lime.
D. none of these..
Answer = none of these.
486. For construction of structures under water, the type of lime used, is.
A. hydraulic lime.
B. fat lime.
C. quick lime.
D. none of these..
Answer = hydraulic lime
487. Pick up the correct statement from the following:.
A. Rust is due to formation of oxides.
B. Cast iron oxidises less.
C. Steel oxidises most.
D. All the above..
Answer = All the above.
488. A prime coat is given to steel work with.
A. an oxide of iron paint.
B. a mixture of white lead and lead paint.
C. a special paint.
D. cement paint..
Answer = a mixture of white lead and lead paint
489. Ground glass.
A. is made by grinding its one side.
B. is made by melting powdered glass paints surface.
C. is used for getting light without transparency.
D. all the above..
Answer = all the above.
490. The harmonious mixing of the clay ingredients, is known as.
A. weathering.
B. blending.
C. tempering.
D. None of these..
Answer = blending
491. Brass is an alloy of.
A. copper and zinc.
B. zinc and lead.
C. tin and silver.
D. tin and lead..
Answer = copper and zinc
492. The wedging is adopted for quarrying costly stratified rock such as.
A. laterite.
B. marble.
C. limestone.
D. All the above..
Answer = All the above.
493. Rapid hardening cement attains early strength due to.
A. larger proportion of lime grounded finer than normal cement.
B. lesser proportion of lime grounded coarser than normal cement.
C. lesser proportion of lime grounded finer than normal cement.
D. excess percentage of gypsum..
Answer = larger proportion of lime grounded finer than normal cement
494. The colour of statuary marble used for sculptor's work, is.
A. red.
B. blue.
C. white.
D. yellow.
Answer = white
495. Second class bricks.
A. are of dark brown colour.
B. produce a metallic sound when struck.
C. are well burnt.
D. are under burnt..
Answer = produce a metallic sound when struck
496. Pick up the correct statement from the following:.
A. The low voltage porcelain is prepared by wet process.
B. The high voltage porcelain is prepared by dry process.
C. The low voltage porcelain is prepared by dry process.
D. None of the above..
Answer = The low voltage porcelain is prepared by dry process
497. Pick up the correct statement from the following:.
A. Adding 5% to 6% of moisture content by weight, increases the volume of dry sand from 18% to 38%.
B. The bulking of fine sand is more than that of coarse sand.
C. If the percentage content of moisture exceeds 10%, increase in bulk of sand starts increasing.
D. All the above..
Answer = All the above.
498. Teak wood is suitable for.
A. sports articles.
B. furnitures.
C. railway sleepers.
D. all the above..
Answer = furnitures
499. Plywood is normally available.
A. 1 mm thick.
B. 2 mm thick.
C. 2 to 3 mm thick.
D. 3 mm to 4 mm thick..
Answer = 3 mm to 4 mm thick.
500. French polish is.
A. oil paint.
B. distemper.
C. spirit varnish.
D. none to these..
Answer = spirit varnish
501. In stone masonry, if stones are so placed that their layers are parallel to the direction of load, they.
A. split easily.
B. are affected by moisture.
C. both (a) and (b).
D. none of these..
Answer = both (a) and (b)